I was looking at some of my pictures on my Ipod Touch. It was on 20 percent battery and i turned it on to sleep mode to go do something for my mom. Once i came back and tried to unlock my ipod it would even turn on. I tried plugging it in to the computer and used many different ipod chargers. How do i get this to work? its only a year old, does it have anything to do with the battery? And if i reset it will the songs i purchased from my ipod still be on there?